Boiler.



v. MAOKAY.

BOILER.

APPLICATION FILED APRJB. 1910 I 995,544. Patented June 20, 1911.

Z SHEBTS SHEBT l,

1 crossvertlcal-section. "Fig; Zis'a cross section'takenhon: the line'.2-. 2of Fig. :1, and" ,3 is fa cross-section on the i line3-3 of VASIL macxa'r, ornosro 'r, massaciiu'sm'rs, Assieuoa drone-Barr 'ro-lcousranm-mos znvrras, or nosa'on, massacnosnms. f

ti esom To' allwhom army-mesa 7 ;"Be it knoWn' that I, VAs1n MaoKAY, of

Boston i-n the county of Suffolk andState ofMassachu setts; a citizen ofthe United St-a'tes -ha've invented a new and useful Im jprovementin Boilers, ofwhi'ch-the follown? 'iu l c a we descriptim rence being had to the accompanying v '7 drawings, forming a-partof thisfspecificar 10 'tion,,i n explaining its nature. v i *Itis' theobject ofmyinvention tOPIOV IdG a boiler'having amo j other advantages the following essentials vantages, viz: a rela' -l i tive'ly large extent of heating surface, uni- ,15

form application. of heat thereto," efi'ective absorption of heat units from. esca ing gases,

' effective water distribution, dura} ilityand safety 'inthesense that intense heatis kept ifroinjthose partsin which sediment might J "f .pans ion ,accessibility' of parts. 1

accumulate, freedom and uniformity o'fgex- 'JQThe improved boiler comprising inv'ention can xo'f the boiler comprises what may betermed y tf b'e seenandunderstood by referehce-tothe drawi'n spin which-- 4 -Figure 1 showssthe'improved boiler in .f -fieferring to the drawings :'-The exterior a, primary setting '1 and a forward extension setting '2. From the rear-bottom end of'the J jsettinglthere extendsa conduit or escape] 2 that combustion is primarily affected. In-

jii'plfii. -It" is within the extension setting side the setting is arranged a grate 4' below primary setting? is mounted.

rr d wlfihin' thegpnma w in:

which is an ashpit'5- both accessible from the front end of the setting. Above ,the' grate iswhat ma'yfbe termed 'a',primar combustion chamber 6 communicating wit a: 'chambfer 7 or secondary combustion cham- 7 her within the primary settin 1- and which secondary chamber-extends a ove said 'primary chamber. Communication is had betweenithe primary andsecondary combus- I tion chambers. by way of a connecting paswa1l9fwhich forms a partof a foundation or pier 10 on which the I ,"Speciilcatio'a of Lettersi'atent. Application filed April 18, 1910; fserial no, 556,131.

side the chamber 7 H is an upright fire-tube boiler 11. j The boiler extends by the-connecting passage 8 throuj h which the products of combustion are. rected from the primarycombust-ion cham-I her into the secondary, 'and'thence for a short distance into the hollow of thepier or foundation IOwhich acts tosupport the y at the so. 1 'bottomend o the boiler ahd which flange extends outwardly to rest upon or insald boiler by a In or fla ngfe. l 2farranged pier. Above the.foundationior ier 10 the size 'of-ithe 'boiler'in relation tot e primary, setting- 1 inclosing it is such that an annular; s5

passage will be formed between-the boiler and the interior-wall ofjits setting. This passage extendsfrom the .pier or foundation adjacent the connecting passage where the "products of combustion enterthe secondary- 7Q combustion ehamber' v fIOIIl-" the primary ch b r, 5 .1 t t e an 0 th o da y s combustionfehamher at which point'sufiicient; j clearance. is left between theftopend' ofthe a boiler and the {head of theprimary-setting for the-products ofi-cornbustion-to, enter at the point of. the to end- 0f :the boiler and 'fla'ssdownwardlyit ough the same to the outlet or escape pipe 3, theinterior passage I of which-connects with a chamber 13 formed by the pier vor foundation. 10 below the base of the boiler. Preferably interposed between thbboiler and thesettin .1 are a series of balfle plates 14f. One 0 these plates is arranged at a point just adjacent the connee't-ing passage 8 in order that the products entering at this point may be directed to course around and by the sides'of the'boiler v to the rear side thereof where they are er m-itted to rise and by the arrangement 0 the other plates, be directed to course upwardlybackand forth over and around the sides of the boiler to the top end thereof where i the enter to pass downwardly through the boi or as aforesaid.-

I prefer to provide the. boiler. 1.. steam drum'15 located in the'head of the primary ,setting'andcontainedartly with 1n the second combustion c amber-and so that the. products ofcombustion risin Pam-tsun m o partly outside t e'same, or in otherword'gfloowithin the;

.willwhen they reach the top end thereof. cont-act with the bottom side of the drum before entering the boiler. I prefer to em- .ploy a drum with the boiler inasmuch as it may be desirable under certain circumstances for purposes of safety to keep the boiler filled with water. -Under other cir- 'cur nstances, however, the drum may be dispensed with, a water line being maintained. lo'iwitliin the boiler at about the point indicated in dotted lines a, any sultable'pipe connection then extending from the head of tl l' b0 il8l as indicated by the dotted line b.

15 head of the boiler'by ayseriesofflpipe conwnections 1e. 1

is had to the interiorfof .the sec- .ondary; combustion chamber and; to ,the i-looiliiifbiy way of flue openings -lfll forined-in the-.w l of "the inclosing setting. These openings are formed at points'jjustadjacent aylhere deposit's' might accumul'ate,. as at a.

point adjacent the top edge ofthe pier *on'which the boiler rests, also atthepoints 25 'of T the respective baflle -plates 1-14- an'd' -at a poi1'1t just adjacent the 'ton"of--'the" boiler I -t l1o' u'gh]there is but slight chance folrfde- .L .p it's to collect at this pointowi 'ng' to'the openings'through.the boiler.

' 3.0 'on to the main boiler' 11 I have i fprovided also-an auxiliary boiler 181located -within "the primary setting .below the I water prises sin-association of .drums 19 -19 and j v pj'inected a series of tubes 21.' -'Thedr'uins are arranged above the grate and in the. upper part of the rimar'y eombustion "chamber! 'll'iey are re erabl located to ex.-

I an longitudinally rom'the rent t'o'the rear Iendfof the chamber with the front endof-the all fp f the getting so thattheforward' ends f; the drums will lieoutside thelc'olilhus'tion j51fe ferably.provided with a detachablefhead 2' {=bolte d thereto.- The drums 20-.20.-' a rra'nged below: the grate .rest-ingon'i ledges v 't'tothe ruins 19 -19 and-their length s ferably. such that. the drums will BX- ,tend through' the'iforward and rear walls located' foutside the setting "heads: 24

attached theretd.

inasmuch as the; drums Thedrum 15 as shown connects with theline'pf said-main boiler; Thi bofler-c ins 29+20, each pair .of drums 19+ 20-;bei

drums preferably extended through the front I chamber; the forward end'of each drum" being "23 kforined in' the side walls ofthe se'ttmg preferabl ;..paralle1ly arranged with-re;

of he setting" with theend's'fof the drums 19 .19 are prefarrangedjnea'rer the longitudinal (zenhe primary. setting flthajii the drums; the connecting tubes .21; will accords assuine -a'lslightly inclined-position r with-m i the"combust on chamberfextendingfl front-points 'overthe rate'irithe upperpart:

of the chamber to'points below the grate on either side thereof. It will also be observed. that the tubes 21 are set quite close together. Each of the pipes or tubes 21 is made sectional in character "and com rises an 11 per sect on 21, a lower section 21 and a joint 21.' The upper sections 21 extend into the drums19 and preferably have an expanded connection therewith, The lowersections 21 connect with. the drums-120 andhave preferably either a threadedor an int ral connection therewith. The oints 21 are located below the grate. The drums 20%20 are connected at the rear ends thereofby the back connections25 (seeFi 3); From each drum. 1 919 there exten s a pipe 26.-

The ipes' 26connect with, the steam drum;

fore J described, then. the pipes 26 will "connect directly with the boiler as indicated in dotted lines 1b their extension d-. f-

Water is fe 'to the respectlveboilersbya a". feed pi e 27 .,1 prefer thatthe watef-"be before. entering the boilers-end, for.

this purpose there is located within-the'con heated n case. a steam drum is not used, as, it might be under some cu'cumstances us be-g duit or escape-pipe 3 a pri nary;.feed water heater28 witbwhichf the feed .pi -e'rfcpm nects, thefheaterin turn connecting by with a pipe 30-which-conneCtS with T9 of -t e m'ain' 'boilerll and with Q-the'bzick connections '25 of 'the respective; drums" pipe 29 a pi e 31 connecting with'the .bottoniend 20- 20 of the auxiliary boiler.

[If desiredwater-may be fed' -to ithe' re-bi spective boilers direct; cutting out the pri mary heater- 28. ,For' this purpose there' is. provided a ipe-32 which connects: with the; eed pipe .2" at a'po'int therein before its 2.1;

primary heater.

- Connecting with thejpi pe 31 by extension there-from is a lilow ofip pe fifi having in it" a valve: 37 By closing theiieedfipipe 2'1 by} a valve 38 therein and by opening the valveig- 37 of the blow-ofl' pipe'the boilers may; blown as occasion may require.- 4

COIIIIECtIOH With thG primaryjheateryand'exs"; I

tends to connect "with the pipe 30;;beyond the-point of the primary. heater. Valves are I rovidedin the respective pipesfa. yalve .33'

1n the feed pipe 97 beyond the pointfwhere' the pipe 32' connects-therewith; a'valve 34'. in the pipe 32 and. a valve in thejpipe 29.1' By opening the valve34 land, closing the} valves33 35;i t--is'obviousthat wa'ter rnaybq fed directly to the boilers'jcuttiug-out the,

1;" In the operation of th boiler the hot gases fand products of combustionffrom 'the fuel burning. on thegrat'ei4 will first contact-in s the prnnary-lcombustionchainber withfthef-xl drums*19 -19 and tubes 21.;of the auxiliary v boiler. They will'thenpa'sscout'of the ri-v yc mb r V lth'e bridge wall 9 and by 1 1 way-of the connecting passageEiinto-the sec tend to circulate downwardly toward the bottom thereof byreason ofthe upward displacement of'the water along the sides. A pipe 16" is shown connecting the bottom center of the drum with the top center of the wardlythrough the pipe 16 c'ausinga conof the main boiler, as beforeexplained, will circulate also through the pipe 31 and back \at thepoint of the center ofsthe boiler inasfwater circulating upwardly on the outside of the boiler to pass into the drum by way ondary combustion chamber 7, first contacting with the boiler at a point removed from the bot-tom thereof. They will then be directed by the respective baflie plates to course upwardly andv around the outside of the boiler to the top end of the chamber 7 where they will encounter the bottom of the steam drum 15. The gases will then enter the top end of the boiler and pass downwardly through the tubes thereof tothe chamber 13 and thence outwardly through the escape pipe in which they will contact with the pipes or tubes ofthe primary water heater 28 located within the escape pipe.

During the operation of the boiler the water adjacent the sides of the main boiler will become more highly heatedtthan the water much as the primary he'atis-applied first to the outside of the boiler. The tendenc'y' accordingly will be for the. water to circulate upwardly into the drum. 15 through the pipes 16 which, aswill be noted by reference of the main boiler with the bottom outer portions of the drum. At the sametime the water at about the center of the boiler will boiler. Accordingly the water in the drum will as the water at the center of the boiler circulates I downwardly act to pass downtinuity of circulation from the'outside of the boiler through the drum to the inside thereof. Owing to the tendency of the water to a downward circular through the pipe 16 and center of the main boiler from the drum, there would belittle tendency for of the central pipe 16". To avoid any diificultyof this kind, however, I prefer that the pipe l6 'be extended into the boiler to a point below where the pipes 16' connect therewith. a

In the auxiliary boiler the jhO t WFtlIeI' con-f tained in the drums 19 and tubes 21 will tend torcirculate upwardly through the pipes 26 into the drum 15, the pipes 26 as shown connecting with the side of the drum. As before explained, the drums'QO of the auxiliary boiler through their back connection 25 and the pipe 31 connect with the bottom of the boiler at about. the center thereof with the effect that as the hot water circulates upwardly through the auxiliary boiler and connections 26 a part of the water circulating downwardly through the center collect, Around the shell of outlet from said' chamber,

. located a in said connection 25 into the drums 20 and rip-' 5 ward again. Accordingly thereis obtained a continuous circulation of water in both, boilers from the hotter to the cooler heating surfaces thereof. v v

In addition to the advantage of effective water distribution as above described attention is directedto the large extent of heating surface presented bythejmain and auxiliary boilers, the water being broken up to be contained within a multiplicity of tubes v and drums. An effective absorption of heat units is obtained in the sense'that the arrangement and continuity of the passages is such as to allow thehot gases andproduct'e of combustion to escape onlyat a relatively low temperature. Durability and safety are obtained in the sense that intense heat'is kept a from those. parts in which the main bo ler is ample space for inspection and clean' On account of the down 'draftthe soot wi l I I collect in the chamber 13 under the bottom of the boiler where it can be'easily removed. a

Easy access is had to both drums of the aux-' iliary boiler. In this connection it may be explained that in practice the drums 19 are I large enough to allow one to enterlandexpand the water tubes connecting therewith. Having thus fully described my invention,

I claim and desire to secure by Letters-Patent-of the United States:- y v 1. A boiler having primary and secondary" chambers, said secondary chamber risin above said pri-mary' chamber and said. "pmmary chamber having portion of said secon ary chamber a" grate located in said primary chamber below the a an uprighttubular boiler located within said secondary chamber and forming between it and. the; 103 wall of said chamber a flue passage around said boiler, said flue passage rising from the outlet to said primary chamber and in com munication alsowit-h the top end of said. 5- boiler, said upright tubular boiler beinga-rranged in said secondary chamber whereby the lower portion cent the outlet from said primary chamber,l

and means for closing the bottom end of and flue passage. .1 15

said boi er from: said outlet 2. A boiler having primary and secondary chambers, said secondary chamber rising above said primary chamber and said primarychamber having an outlet intothe base portion of said secondary chamber,

primary chamber below the said chamber, an ashpit below" an upright tubular boiler located secondary chamber andformin'g outlet from said grate, within said between it and'the wall of said chanibera 125i flue 'mssage around said boiler, said flue passage rising from the outlet to said primary chamber and in communication also sediment mi htj an outlet into the-base. 100.

thereof will lie just adja- I a grate Y with the top end of said boiler, said boiler being arranged in said secondary chamber whereby the bottom end thereof will lie above the line of said grate and the lower portion of said boiler will lie just adjacent the outlet from said primary chamber,-means for closing the bottom end of said boiler from said outlet and flue passage, and an escape pipe from the bottom end of said boiler lying back of said ashpit and substantially in the same horizontal plane therewith.

3. A boiler having primary and secondary chambers, said secondary chamber rising above said primary chamber and said primary chamber having an out-let into the base portion of said secondary chamber, a grate located in said primary chamber below the outlet from said chamber, a bridgewall located at the rear of said primary chamber, an upright tubular boiler located within said secondary chamber and forming between, it and the interior wall of said,

chamber a flue passage aroundsaid boiler rlsing from sald outlet and in communication also with the top end of said boiler, a setting for the lower end of said boiler and of which setting the said bridge wall forms a part, for supporting said boiler and cooperating therewith in a manner whereby the lower portion thereof will lie just adjacent the outlet from said primary chamber and the bottom end of said boiler will be closed from said outlet and flue passage.

4:. A boiler having primary and secondary chambers, said secondary chamber rising above said primary chamber and said primary chamber having an outlet into the base portion of said secondary chamber, a grate located in said primary chamber below the outlet from said chamber, an upright tubular boiler located within said secondary chamber and forming between it and the wall of said chamber a flue passage around said boiler, said flue passagerising from the outlet to said primary chamber and in communication also with the top end of said boiler, a setting for said boiler arranged to the end that the lower portion of said boiler may lie just adjacent the outlet from said primary chamber and the bottom end of said boiler be closed therefrom, said setting providing also a chamber below the bottom end of said boiler and escape pipe leading therefrom.

5. A boiler having primary and secondary chambers, said secondary chamber rising above said primary chamber and said primary chamber having an outlet into the base portion of said secondar chamber, a grate located in said primary c amber below the outlet from said chamber, an uprighttubular boiler located within said secondary chamber and forming between it and the 'wall .of said chamber a fine passage around said boiler, said flue passage rising from the outlet to said primary chamber and in communication also with the top end of said boiler, means for supporting and arranging said boiler whereby the lower portion thereof may lie just adjacent the outlet'from said primary chamber and the bottom end of said boiler be closed from said outlet, an escape pipe connecting with the bottom end of said boiler, and a feed water pipe leading into said. boiler at the bottom thereof at about the center.

6. A boiler having primary and secondary chambers, said secondary chamber rising :abovesaid primary chamber and said primary chamber having an outlet into the base portion of said secondary, chamber, a grate located in said primary chamber below the outlet from said chamber, an upright tubular boiler located within said secondary chamber and forming between it and the wall of said chamber a flue passage around said boiler, said flue passage rising from the outlet to said primary chamber and in communication also with the top end of said boiler, means for-supporting and arranging said boiler'whereby the lower portion there- 'of will lie just adjacent the outlet from said primary chamber and the bottom end of said boiler'be closed from said outlet, a

drum located above said boiler, pipes interposed between the head of said boiler and said drum, said pipes being arranged to provide a passage for water contained in said boiler adjacent to the sides thereof, into said drum, and a passage also for water contained in said drum, into said boiler at about the center of the top thereof whereby water in said boiler may circulate upwardly along the sides thereof into said drum and thence downwardly from said drum into said boiler at about the center thereof.

7. The combination with an upright boiler having flue passages extending longitudinally through the same, of a drum located above said boiler, pipes interposedbetween the head of said boiler and said drum, said pipes being arranged to provide a passage for water contained in said boiler adjacent to the sides thereof into said drum and a passage, also, for water contained in said drum into said boiler at about the center thereof, means whereby heat generated and applied to said boiler may be confined and directed to pass upwardly alongside the outer heating surface thereof to contact with the bottom surface of said drum and thence be directed to pass downwardly through said boiler by way of the flue passage therein.

8. A boiler having primary and secondary chambers, said secondary chamber rising above said primary chamber, an upright tubular boiler located within said secondary chamber, means whereby heat generated in bottom end thereof and thence'bedirecteii" to pass upwardly through said secondary chamber alongside said boiler to enter the top end thereof and thence pass downprimary chamber having an outlet into the base portion of said secondary chamber, an upright tubular boiler located within said wardly' through said boiler,an escape-pipe leading from the lower end of said boiler,

an auxiliary boilerlocated in said primary chamber below the water line of said vtubular boiler, means connecting the head portion of saidauxiliary boiler with said tubular boiler, and means connecting the lower portions of said boilers."

9. A boiler having primary and secondary chambers, said secondary chamber rising above said primarychamber, an upright tubular boiler located within said secondary chamber, means whereby heat generated in said primary chamber may be directed to encounter said boiler at a point above the bottom end thereof and thence be directed to pass upwardly through said secondary chamber alongside said boiler to enter the top end thereof and thence pass downwardly through said boiler, an escape pipe leading from the lower end of said boiler, a drum located above said boiler, pipes interposed between the head of saidboiler and said drum,

said pipes being arranged to rovide a passage for water contained in said boiler adjacent'the sides thereof, into said drum and a passage also for water contained in said drum, into said boiler at about the center thereof, an auxiliary boiler'located within said primarychamber below the water line maintained in said drum, means connecting the upper ortion of said auxiliary boiler with said rum, and means connecting the lower portions ofsaid boilers.

1 0. A boiler having primary and secondary chambers, said secondary chamber rising above said primary chamber and said primary chamberhaving an outlet into the.

baseportio of said secondary chamber, an upright tubular boiler located within said secondary chamber and forming between it and the wall of said chamber a flue passage around said boiler in communication with the top end thereof, means for supporting and arranging said boiler within said sec- ,ondary chamber whereby the lower portion 7 thereof will be just adjacent the outlet from said rimary chamber and the bottom end :of said boiler willbe closed from said outlet and flue passage, an escape pipe leading from the lower end of said boiler, an auxiliary boiler located within said primary chamber below the water line of said tubular boiler, said auxiliary boiler comprising upper and lower drums and a series of pi es connecting said drums, a pipe connection tween the upper ones of said drums and said boiler and a pipe connection betweensaid tubular boiler from a point about the center of the bottom thereof and the lower ones of said drums.

. '11. A boiler having primary and secondary chambers, said secondary chamber rismg above said prlmary chamber and said and arranging said boiler within said secondary chamber whereby the lower portion vthereof will be just adjacent the outlet from said primary chamber and the bottom end of said boiler will be closed from said outletand flue passage, a drum located above said boiler, pipes interposed between the head of said boiler and said drum, said pipes being arranged to provide a passage for water contained in said boiler from along y "the sides thereof,into said drum and a pas sage, also, for water in said drum from a point about the center thereof, into said boiler, at or about the center of the top of i said boiler, an auxiliary boiler located within said primary chamber below the water line of said tubular boiler, said auxiliary boiler comprising upper and lower drums and a series of pipes connecting said drums, a pipe connection between the upper ones of said drums and the drum. above said boiler and a back connection between the lower ones of said drums and a pipe connection between said tubular boiler from a point at about the center. of the bottom thereof and said back connection.

12. In a boiler, a setting having located therein a rate and forming a combustion chamber a ove said grate, drums located within said combustion chamber above said .grate and extending through the front wall of said setting, drums located outside the combustion chamber below said grate and extending through the front and rear, walls of said setting, and a series of pipes extending through said combustionchamber and connecting the upper and lower sets of drums.

13. In a boiler, a setting having located therein a grate and forming a combustion chamber above said grate, a drum located within, said combustion chamber above said grate, and a drum located outside said combustion chamber below said grate, and a series of pipes connecting said drums, each of said pipes being sectional in character one section of which connects with the upper of said drums and the lower section with the lower of said drums, and a joint connecting said sections, which joint is located below said grate.

14. In a boiler, a setting having located therein a grate and forming a combustion chamber *abovesaid grate, a drum located within said combustion chamber above said grate, anda, drum located-outside said-combustion chalnbenbelow said grate, and a "series of pipes connecting-said drums, each.

of said pipes being sectional in character onesectiOn of which extends into said upper drum and is expanded into the'same and 10 theother section of which connects with said lower drum, and a joint connecting said sections and located below said grate.

. VA-SIL AGKAYL Witnesses: i V

JOHN E. R. HAYES,

v GEORGE LANGTON. 

